Blighted ovum
In today's world, Blighted ovum has become a topic of great relevance and interest to people around the world. With the advancement of technology and globalization, Blighted ovum has acquired increasing importance in people's daily lives, impacting areas such as education, work, politics, health, among others. This is why it is crucial to understand and analyze in detail how Blighted ovum is changing and shaping the world we live in, as well as the possible implications and consequences this may have in the future. In this article, we will thoroughly explore the impact and relevance of Blighted ovum today, as well as the challenges and opportunities it presents for modern society.
| Anembryonic gestation | |
|---|---|
| Other names | Anembryonic gestation, anembryonic pregnancy |
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| Transvaginal ultrasonography showing a gestational sac with a diameter of 28 mm, corresponding to a gestational age of approximately 7 weeks and 5 days. It contains a yolk sac (protruding from its lower part) but no embryo, even after scanning across all planes of the gestational sac, thus being diagnostic of an anembryonic gestation. | |
| Specialty | Obstetrics |
A blighted ovum is a pregnancy in which the embryo never develops or develops and is reabsorbed. In a normal pregnancy, an embryo would be visible on an ultrasound by six weeks after the woman's last menstrual period. Anembryonic gestation is one of the causes of miscarriage of a pregnancy and accounts for roughly half of first-trimester miscarriages. A blighted ovum cannot result in a viable pregnancy.
A blighted ovum or anembryonic gestation is characterized by a normal-appearing gestational sac, but the absence of an embryo. It likely occurs as a result of early embryonic death with continued development of the trophoblast. When small, the sac cannot be distinguished from the early normal pregnancy, as there may be a yolk sac, though a fetal pole is not seen. In anembryonic pregnancy, levels of the pregnancy hormone human chorionic gonadotropin (hCG) typically rise for a time, which can cause positive pregnancy test results and pregnancy symptoms such as tender breasts. Because of the presence of hCG, an ultrasound is typically necessary to diagnose an anembryonic pregnancy. For diagnosis, the sac must be of sufficient size that the absence of normal embryonic elements is established. The criteria depends on the type of ultrasound exam performed. A transvaginal ultrasound provides a better view of early pregnancy than a transabdominal ultrasound. Generally, a transvaginal ultrasound is used to investigate a suspected case of blighted ovum. A pregnancy is anembryonic if a transvaginal ultrasound reveals a sac with a mean gestational sac diameter (MGD) greater than 25 mm and no yolk sac, or an MGD >25 mm with no embryo. A transabdominal ultrasound can be used to diagnose anembryonic pregnancy if a gestational sac can be identified, but is empty. An anembryonic pregnancy is never viable, as in viable pregnancy the embryo must form with the gestational sac.
See also
References
- ^ Kim Mackenzie-Morris. "What is a blighted ovum?". Babycentre.co.uk. Retrieved 19 December 2013.
- ^ a b c d e f "Blighted Ovum (Anembryonic Pregnancy): Causes & Symptoms". Cleveland Clinic. Retrieved 2024-04-08.
- ^ a b c Stuart, Annie. "Blighted Ovum: Causes, Symptoms, and More". WebMD. Retrieved 2024-04-08.
- ^ "Blighted Ovum: Symptoms, Causes and Prevention". American Pregnancy Association. 2012-04-26. Retrieved 2017-09-09.
- ^ "Blighted ovum: What causes it?". Mayo Clinic. Retrieved 2017-09-09.
- ^ Hoffman, Barbara (2012). Williams gynecology. New York: McGraw-Hill Medical. p. 171. ISBN 9780071716727.
- ^ a b c "What is a blighted ovum?". BabyCenter. Retrieved 2024-04-08.
- ^ "Ultrasound In Pregnancy: What To Expect, Purpose & Results". Cleveland Clinic. Retrieved 2024-04-08.
- ^ Campion, Edward W.; Doubilet, Peter M.; Benson, Carol B.; Bourne, Tom; Blaivas, Michael (10 October 2013). "Diagnostic Criteria for Nonviable Pregnancy Early in the First Trimester" (PDF). New England Journal of Medicine. 369 (15): 1443–1451. doi:10.1056/NEJMra1302417. PMID 24106937.
External links
- Blighted Ovum on WebMD
- Anembryonic pregnancy on Radiopaedia.org
- Johnson, MR; Riddle, AF; Sharma, V; Collins, WP; Nicolaides, KH; Grudzinskas, JG (January 1993). "Placental and ovarian hormones in anembryonic pregnancy". Human Reproduction (Oxford, England). 8 (1): 112–5. doi:10.1093/oxfordjournals.humrep.a137857. PMID 8458911.
- Facts Are Important: Understanding and Navigating Viability on ACOG